Didn't know there was a 40s version of the Lodger. I really like the 20s version of Hitchcock

Most of the movies already been mentioned so sorry if already been mentioned (from my collection):

20s:
The Cabinet of Dr Caligari; Häxan; The Hunchback of Notre Dame;The Hands of Orlac,The Phantom of the Opera; The Bat; The Cat and the Canary; The Lodger; Metropolis; The Man Who Laughs

30s:
L'Age d'Or; Freaks; The Invisible Man; Mystery of the Wax Musuem; Mad Love; The Raven; Child Bride

40s:
Cat People; The Curse of the Cat People; The Spiral Staircase; The Dark Mirror

50s:
The Thing from Another World; Godzilla; Them!; Creature with the Atom Brain; Les Diaboliques; The Night of the Hunter; Tarantula; The beast with a million Eyes; The Bad Seed; Earth vs the Flying Saucers; The She-Creature; I Vampiri; The Monster that Challenged the Worrld; Earth vs the Spider; Fiend without a Face; The Fly; Return of the Fly; A Night to Remember; The Screaming Skull; The Head; House on Haunted Hill; Invisible INvaders; Tiger Bay; The Tingler, Wasp Woman

60s:
Black Sunday; Tormented; Village of the Damned, Children of the Damned; The Eyes without a Face; Homicidal; The Innocents, Mr. Sardonicus; The Damned; The Miracle Worker; What ever happened to baby Jane; The Flesh Eaters; Hush Hush Sweet Charlotte; The Nanny; Spider baby; Night of the Living Dead

From 70s and later I don't know one right away except for "Paper Moon"